| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] [noun] | 239943 |
|
| 2 | [prep] a [adj] years | 820 |
|
| 3 | [prep] [adj] years [noun] | 710 |
|
| 4 | a [adj] years [noun] | 57 |
|
